Method and apparatus for improving the error rate of track information on a magnetic storage device
a technology of magnetic storage device and track information, applied in the field of information storage, can solve the problems of degrading the error rate performance of written track, affecting the accuracy of track information, etc., and achieve the effect of improving the error rate of track information
Inactive Publication Date: 2009-07-28
WESTERN DIGITAL TECH INC
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Benefits of technology
The patent describes a way to improve the accuracy of track information on a magnetic storage device. It includes a counter to keep track of the number of writes to a specific track, and a re-read and re-write initiator to read information from an adjacent track and rewrite it back to the device if the counter reaches a certain level of activity. This can help reduce errors and improve the reliability of data storage on magnetic devices.
Problems solved by technology
In fact, most computing systems are not operational without some type of hard disk drive to store the most basic computing information such as the boot operation, the operating system, the applications, and the like.
When the written tracks are packed closer together, not only does the error rate performance of a written track degrade but also the adjacent track interference (ATI) will become a severe problem.
This overlap will result in added noise and degradation of the data on the tracks n+1 and n−1.
However, as is well known in the art, the reduction of the size of head 105 results in an increased error loss rate in the recording system.
However, maintaining the track at a fixed pitch significantly impacts the capability to increase storage capacity on the magnetic storage device.
Method used
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[0018]Reference will now be made in detail to the alternative embodiment(s)s of the present invention, an apparatus and method for improving the error rate of track information on a magnetic storage device. While the invention will be described in conjunction with the alternative embodiment(s), it will be understood that they are not intended to limit the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention as defined by the appended claims.
[0019]Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be recognized by one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well known methods, procedures, components, and circ...
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Abstract
An apparatus and method for improving the error rate of track information on a magnetic storage device is disclosed. One embodiment provides a counter for counting the number of writes to a first track on a magnetic storage device. In addition, a re-read and re-write initiator is provided for reading information from a second track adjacent to the first track and re-writing the information read from the second track back to said magnetic storage device when said counter reaches a pre-defined number of writes for the fist track.
Description
TECHNICAL FIELD[0001]The present invention relates to the field of information storage, and more particularly to an apparatus and method for improving the error rate of track information on a magnetic storage device.BACKGROUND ART[0002]Magnetic drives such as hard disk drives (HDD) are used in almost all computer system operations. In fact, most computing systems are not operational without some type of hard disk drive to store the most basic computing information such as the boot operation, the operating system, the applications, and the like. In general, the hard disk drive is a device which may or may not be removable, but without which the computing system will generally not operate.[0003]The basic hard disk drive model was established approximately 50 years ago and resembles a phonograph. That is, the hard drive model includes a storage disk or hard disk that spins at a standard rotational speed. An actuator arm with a suspended slider is utilized to reach out over the disk. Th...
Claims
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IPC IPC(8): G11B15/04
CPCG11B20/18G11B2020/183
Inventor CHENG, NELSON
Owner WESTERN DIGITAL TECH INC